Demountable-rim-expanding tool.



YHLAME, DEMGUNTABLE BIM EXPANDING TOOL. APPLzcATmN ma@ 061:20A 19|?.

Patented Api'. 15, 1919.

' jmmtvo/a magma "E LHMB@ rifrmnxrnnnrne moet.

. i om t may conce/rn:

f it lrno'svn that L @reinen T. Laine a en United Sta-tes, residing et "dante, in the county oi Vigo, @tate a, have invented new and useful Rini-Expanding ',iools; and l do hereby delare Athe following to'he a full,

einer exactdeeorintion of the invention 7 I* n y 7 li es will. enalne others skilled in tno art glieli eppertaine to ineke end use the The present invention rela-tes to a tool for i expanding deniountahle rims, and has for rir s which ie comparatively Simple and in-` expensive infits construction, which can he quickly applied to the rim or removed thereein, 'Whielr can he eas l manipulated hy a greatly deeing'le persony and which will er e lehoi" incident to planing in Lnon upon the rnn or removing it there .ith these and other objects in view, the invention consists in eert-ain novel c01nhinations end. arrangements of the parte as will more .ti-ally appear the description preeeeda the novel. eatnres the-renic heing ont in the appended claims. i er o inll 'nnderetarnling of the invention5 ine to he had to the oilovving desei Non ond. accompanying drawings, in

l is a front elevation oi' a rim etl pending tool constructed in accordance with thefinventiony the tool being Shown as a yplied to deniountahle rim and swung; into ,position for expanding the rim. to separa-te 'the ende thereof, portions of the rini l being brel-fen away and shown in section.

Fig. :2 is aV perspective View of the denionntahle rior expanding tool.

Fig. is4 a transverse sectional View thronghthe tool. l

lfig. i is adetail View showing e slight -inod r tion'o-the invention.

Corresponding midline parte referred to in' the following description and indient d in ail the views of the drawings by the saine reference eliaracters.

Referring; to the drawings, which illnetrate one possible en'xhodiment of the .inventon, the reference character A designates a central body to which a. series of rixn expanding arms i are pivotally connected and. arranged in snoh a meneer as to have a can? action for expanding the rim when the oentral body is rotated in the plane of the rim. The reference character B designates a' oonventional deinountable rim which is provided'with .suitable fastening `means 2 for looking the ends thereof together when the rim has a tire thereon and is ready for use.

The central body may he conveniently oonsti-noted of a pair of spaced plates 3 which. eresimilar in construction, heingshown in the prese-nt Jnstancx, as having a square ooniiguration. These spaced plates 3 are conn neeted at three'of their corners by pivot holt-s 4 which engage the inner ends of the rin expanding' arms l. The operating; handle i? is provided with u. forked end 5 which studies the central `body er and is riveted or otherwise rigidly secured thereto.y ae indi cated at G, the hody portion of the linndle heine ofi'set outwardly away from the plane of the hody and. efqiandingF arms so that i will swing abo' ethe rim and tire when the tooi is in nsof es Aindicated by Fig. l.

rlibe/outer ende ot the rim expanding arms 1. terminate in feet 'i' which are adapted to engage the inner periphery of. the demonntable rim, lllhere there are three arms, as in the 'pre-,Sent instance, two of' the arms will he eau-Sed to engage the deznountahle riin at points on opposite sides ot the break therein, While the third arm will engage the de mountable rim at e point diametrieally opposite the saidhreal. 'ihese Severn] expanding* arms l are each of euch a'leng'th as to'he initiaily'inolined to radial lines extending; from the eenter oi'f the body A. through the respective pivot holte Li., and 'with this arn rangement it 'will oovione that when operating handle is manipulated to rotate the body and canee the arme l to approach. radial positions, the outer ends of the arme Will be forced outwardly lay a earn aotion so as to expand the deinonntahle rino and Separate the ende thereof, indicated. hy Fig'. l. The outer feces, oi? the feet 7 may,

shown, have a earn formation so ae to oo- @a Lacona-i operate with the swinging of the arms to expand the rin1,'and suitable lockinfr means, such as the bar 8, may be .provided or holding the too-l in operative position, thereby leaving the operator free to use both hands to manipulate a'screW-driver or like tool for releasing the fastening means 2 of the demjountable rim, or for placing the screw* driver in such a position that the ends of the. demoun'tlalble rim will slip over each other When the expanding tool is removed. This locking bar 8 is shown as pivot-ally connected. at 9 to the operating handle 5, and as passing slidably through alooped keeper 1 *7L which is formed at an intermediate point in the length of one of the expending 'arms l. A locking pin 10 passes through the (keeper l*l and is adapted to engage any selected one of a series of openings l1 in the bar 8 to hold the bar and operating )handle in position, With this construction it Will be understood that When placing the tool in position the rim expanding arms l are all swung in the same general tdirection to positions at sufficiently great angles -to radial lines extending from 'the center of the body A to admit of the device being placed in proper position Within the denrountable rnn B. The handle 5 is then manipulated to rotate the central body A and decrease the angular relation between 'the expanding arms l and radial lines exy tending from the body A, the outer ends of the arms being thus forced outwardly and the cam surfaces of the feet 7 bro-ugl'it into operation for expanding the demountable rim and separating the ends thereof. When removing an old tire from the demountable rim a screwdriver or like tool Will be used for causing the ends of the rim to slip 'over each other when the expanding tool 4is removed, While vwhenV placing a new 'tire in position upon the rim the ends of the rim will' be brought into proper position for springing into 'a locking relation when the tool is removed.

Fig. Il illustrates a slight modification in which four rim expanding Iarms l, corre spending to the arms l of 'the previously described construction, are pivotally connected by the bolts la to the four corners of the square body A. The operating handle 5 is rigidly secured to the central. body A, exactly as in the previous instance, andthe rim expanding ln have a construction identical with that of the arms l. It Will thus be obvious t iat by swinging all of the arms la in the saine direction to contract the tool it can ybe readily placed in a demountable rim, and the rim subsequently expanded in the desired manner by manipu-` lating the handle 5 and rotating the central body A to more the expanding arms toward 'a radial position with respect thereto.

Having thus described the invention, what cally arranged with respect to the body and have a rolling contact and cam action upon the rim to assist in expanding' the rim when 'the central bodyis rotated to move the arms toward radial positions with respect thereto. 2. A tool for expanding demountable rims, includinga pair of similar spaced plates, a handle formed with a forked and which straddles the spaced plates and is rigidly secured to the outer faces thereof, pivot pins rigidly connecting edge portions of the spaced plates, and rim expanding arms having Vthe inner ends thereof received between the spaced plates and loosely mounted upon the pivot pins, said arms projecting from the body in an angular rela tion and terminating in feet adapted to engage the rim to expand the same When the central bodyis rotated to swing the arms toward a radial position With respect thereto.

3. A tool for expanding demountable rims, including a pair of similar and spaced plates, a handle formed with a forked end Which straddles the spaced plates and is rigidly secured to the outer faces thereof,

pivot pins rigidly connecting edge portions of the spaced plates, riin expanding arms iaving the inner ends thereof received between the spacedplates and loosely mounted -upon the pivot pins, the outer ends of the arms terminating in feet which engage the rim and the intermediate portion of one of the arms being provided with a looped keeper., and a locking (bar pivotally connected to the handle and adjustably received Within the looped keeper of the expanding arm for holding the tool in operative position. i

'in testimony -whereof 'l have signed my name to this specification in the presence of two subscribing Witnesses.

enanos T. Lann. Witnesses: y

STEPHEN R. CHArrnnn, Z. M. APPLE. 

